CN112491005A - Recoverable quick protection circuit of 28V/on output interface circuit - Google Patents
Recoverable quick protection circuit of 28V/on output interface circuit Download PDFInfo
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- CN112491005A CN112491005A CN202011222622.0A CN202011222622A CN112491005A CN 112491005 A CN112491005 A CN 112491005A CN 202011222622 A CN202011222622 A CN 202011222622A CN 112491005 A CN112491005 A CN 112491005A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/08—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current
- H02H3/087—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current for dc applications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/02—Details
- H02H3/06—Details with automatic reconnection
- H02H3/066—Reconnection being a consequence of eliminating the fault which caused disconnection
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/08—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
- H02M1/083—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters for the ignition at the zero crossing of the voltage or the current
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D10/00—Energy efficient computing, e.g. low power processors, power management or thermal management
Abstract
The invention discloses a recoverable fast protection circuit of a 28V/on output interface circuit, which comprises: the circuit comprises a signal conditioning circuit, a comparator circuit, a fast protection driving circuit and a state latch circuit. The current detection signal is converted into a range which can be collected by the comparator circuit by the signal conditioning circuit, the current sampling signal is compared with a preset short-circuit protection threshold value by the comparator circuit, when short-circuit fault occurs, the output of the comparator controls the fast protection driving circuit to turn off 28V output within 30us, and meanwhile, the state latch circuit realizes state latch. After the fault is eliminated, the circuit can be recovered only by sending an unlocking signal by the upper computer and releasing the latch. The method has the characteristics of high protection speed, high reliability and recoverable circuit.
Description
Technical Field
The invention relates to but is not limited to the technology of protecting an output interface of an airborne electromechanical system, in particular to a recoverable quick protection circuit of a 28V/on output interface circuit.
Background
In aeronautical electromechanical products, a 28V/on output interface circuit is commonly used for driving external equipment. When the external equipment is in short circuit or serious overload, the current which is dozens of or even hundreds of times of rated current flows in the 28V/on output interface circuit, and serious damage is caused to electromechanical products. It is therefore necessary to design a fast protection circuit to turn off the power switching device in as short a time as possible, protecting the safe operation of the "28V/on" output interface circuit.
In the traditional circuit design, a 28V/on output interface circuit is subjected to overcurrent protection by a common fuse, the protection mode can be continuously used after the fuse is blown by short circuit once, and the maintenance cost is high and the period is long for aviation products.
The recoverable rapid protection circuit provided by the embodiment of the invention is based on a singlechip C8051F502, a rapid protection mode is designed, when a short-circuit fault occurs, rapid protection, rapid turn-off and load removal are carried out based on a pure hardware circuit, state latching is carried out after the turn-off, and the reset is controlled by a host computer after the fault is eliminated, so that the circuit is recovered to a normal state. The recoverable rapid protection circuit provided by the embodiment of the invention is convenient to realize in terms of hardware circuits, can be recovered after a fault, and is low in maintenance cost.
Disclosure of Invention
Aiming at the problem that a device needs to be replaced after one fault exists in the traditional 28V/open output interface circuit protection design, the embodiment of the invention provides a recoverable rapid protection circuit of a 28V/open output interface.
The purpose of the invention is as follows: the embodiment of the invention provides a recoverable rapid protection circuit of a 28V/on output interface circuit, which is used for realizing the functions of protection during short circuit and recovery of the circuit after fault removal, and has the advantages of reliable protection, recoverable circuit and the like.
The technical scheme of the invention is as follows: the embodiment of the invention provides a recoverable fast protection circuit of a 28V/on output interface circuit, which comprises: the circuit comprises a signal conditioning circuit, a comparator circuit, a fast protection driving circuit and a state latch circuit;
the output end of the signal conditioning circuit is connected to the input end of the comparator circuit, the output end of the comparator circuit is respectively connected to the first input end of the fast protection driving circuit and the input end of the state latch circuit, the output end of the state latch circuit is connected to the second input end of the fast protection driving circuit, and the output end of the fast protection driving circuit is coupled to the driving circuit;
the restorable quick protection circuit is used for conditioning the sampling signal into a signal which can be collected by the comparator circuit through the signal conditioning circuit, comparing the sampling signal through the comparator circuit, and realizing the turnover of an output signal during short circuit, thereby controlling the quick protection driving circuit to pull down the driving signal for driving, and controlling the state latch circuit to realize state latch.
Optionally, in the recoverable fast protection circuit of the "28V/on" output interface circuit, the signal conditioning circuit is implemented by using a sampling resistor and an operational amplifier;
the sampling resistor is used for converting the current sampling signal into a voltage sampling signal;
and the operational amplifier is used for conditioning the amplitude of the voltage sampling signal to an amplitude range which can be collected by the comparator circuit through the proportional amplification of the operational amplifier.
Optionally, in the recoverable fast protection circuit of the "28V/on" output interface circuit, the comparator circuit uses a built-in comparator of the single chip microcomputer C8051F 502;
the amplitude of the voltage sampling signal is conditioned to the amplitude range which can be collected by the comparator circuit, and the method specifically comprises the following steps: and the amplitude of the voltage sampling signal is regulated to the interface range of a comparator built in the singlechip C8051F 502.
Alternatively, in a recoverable fast protection circuit of the "28V/on" output interface circuit as described above,
the comparator circuit is used for comparing the voltage sampling signal with a preset comparison threshold value, and when the sampling value of the voltage sampling signal exceeds the comparison threshold value, the output level of the comparator circuit is turned from low to high.
Alternatively, in a recoverable fast protection circuit of the "28V/on" output interface circuit as described above,
the comparison threshold preset in the comparator circuit is determined according to the limit value of the 28V/on output interface circuit and the bearing capacity of the circuit.
Alternatively, in a recoverable fast protection circuit of the "28V/on" output interface circuit as described above,
the fast protection driving circuit is used for pulling down a driving signal of a 28V/on output interface circuit output by the driving circuit and quickly switching off 28V output when the output level of the comparator circuit is reversed.
Alternatively, in a recoverable fast protection circuit of the "28V/on" output interface circuit as described above,
the comparator circuit is also used for generating an interrupt signal and transmitting the interrupt signal to the state latch circuit when the output level is overturned;
the state latch circuit is used for outputting a state latch signal according to the interrupt signal so as to control the fast protection driving circuit to maintain the driving signal to be at a low level and realize state latch.
Optionally, in the recoverable fast protection circuit of the "28V/on" output interface circuit as described above, the method further includes: a drive circuit;
the driving signal sent by the upper computer is connected to the input end of the driving circuit, and the output end of the driving circuit is connected to the 28V/on output interface circuit;
the driving circuit is used for outputting a driving level to drive the 28V/on output interface circuit under the control of the driving signal.
The invention has the beneficial effects that: the embodiment of the invention provides a recoverable fast protection circuit of a 28V/on output interface circuit, which comprises: the circuit comprises a signal conditioning circuit, a comparator circuit, a fast protection driving circuit and a state latch circuit; according to the restorable quick protection circuit, the sampling signal can be conditioned into a signal which can be collected by the comparator circuit through the signal conditioning circuit, the sampling signal is compared and processed through the comparator circuit, and the output signal is turned over when the short circuit occurs, so that the quick protection driving circuit is controlled to pull down the driving signal for driving, and the state latch circuit is controlled to realize state locking. The turn-off process of the restorable quick protection circuit provided by the embodiment of the invention is completely finished by a hardware circuit, so that the rapidity of turn-off in fault is ensured, and tests prove that the circuit can finish short-circuit protection within 30us after a short-circuit fault occurs. The restorable quick protection circuit provided by the invention has the functions of overcurrent quick protection, state latching, recovery after failure relief and the like, effectively ensures the safety and reliability of a 28V/on output interface circuit of a helicopter electromechanical product, and reduces the system maintenance cost.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the example serve to explain the principles of the invention and not to limit the invention.
Fig. 1 is a schematic structural diagram of a recoverable fast protection circuit of a 28V/on output interface circuit according to an embodiment of the present invention;
FIG. 2 is a block diagram of a recoverable fast protection circuit of a 28V/ON output interface circuit according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a fast protection driving circuit according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that the embodiments and features of the embodiments in the present application may be arbitrarily combined with each other without conflict.
Aiming at the problem that the fuse can be continuously used only after being replaced after the fuse is blown by short circuit once when overcurrent protection is carried out on a 28V/on output interface circuit by adopting the fuse in the background technology. The embodiment of the invention provides a recoverable rapid protection circuit of a 28V/on output interface circuit, which is based on a singlechip C8051F502, is designed with a rapid protection mode, and when short-circuit fault occurs, the circuit is rapidly protected, rapidly turned off, loads are cut off, state latching is carried out after turning off, and the circuit is controlled by an upper computer to be reset after the fault is eliminated, so that the circuit is recovered to a normal state. The recoverable rapid protection circuit provided by the embodiment of the invention is convenient to realize in terms of hardware circuits, can be recovered after a fault, and is low in maintenance cost.
Fig. 1 is a schematic structural diagram of a recoverable fast protection circuit of a 28V/on output interface circuit according to an embodiment of the present invention, and fig. 2 is a block diagram of a recoverable fast protection circuit of a 28V/on output interface circuit according to an embodiment of the present invention.
Referring to fig. 1 and fig. 2, an embodiment of the present invention provides a recoverable fast protection circuit of a 28V/on output interface circuit, including: the circuit comprises a signal conditioning circuit, a comparator circuit, a fast protection driving circuit and a state latch circuit.
The signal conditioning circuit is used for converting the amplitude of the sampling signal into an amplitude range which can be acquired by the comparator circuit, and the comparator circuit can be a circuit which is arranged in the singlechip C8051F 502.
The comparator circuit in the embodiment of the invention is used for comparing the sampling signal with a preset short-circuit protection threshold, when a short-circuit fault occurs, the sampling signal exceeds the protection threshold, the output level of the comparator circuit is turned from low to high, on one hand, the fast protection driving circuit is controlled to pull down the driving signal of the 28V/on output interface circuit and turn off the 28V output, and on the other hand, the state latch circuit is controlled to realize state latch. After the fault is eliminated, the upper computer sends out an unlocking signal to release the latching state of the state latching circuit, and the circuit is recovered.
The turn-off process of the restorable quick protection circuit of the 28V/on output interface circuit is completely finished by a hardware circuit, so that the rapidity of turn-off in fault is ensured, and tests prove that the circuit can finish short-circuit protection within 30us after a short-circuit fault occurs.
The signal conditioning circuit in the embodiment of the invention is realized by adopting the sampling resistor and the operational amplifier, the conversion from the current sampling signal to the voltage sampling signal is realized through the sampling resistor, and the amplitude of the voltage sampling signal is conditioned to the amplitude range which can be collected by the comparator circuit through the proportional amplification of the operational amplifier.
In practical application, the comparator circuit uses a built-in comparator of the singlechip C8051F502, that is, the amplitude of the voltage sampling signal is regulated to be within the interface range of the built-in comparator circuit of the singlechip C8051F 502.
Because the comparator circuit uses the built-in comparator of the singlechip C8051F502, the comparison mode for realizing the comparison between the voltage sampling signal and the comparison threshold value is as follows: when the sampling value of the voltage sampling signal exceeds the comparison threshold value, the output level of the comparator circuit is turned from low to high, and the fast protection driving circuit is controlled to pull down the driving signal.
The comparison threshold value preset in the comparator circuit is determined based on the limit value of the "28V/on" output interface circuit and the circuit withstand capacity. In the embodiment of the present invention, for example, a seven-time point of the rated current is used as the fast turn-off point.
The fast protection driving circuit in the embodiment of the invention is used for pulling down the driving signal of the 28V/on output interface circuit and rapidly switching off the 28V output when the output level of the comparator circuit is reversed.
The state latch circuit in the embodiment of the invention is realized based on an interrupt program of a singlechip C8051F502 comparator, the comparator circuit generates an interrupt signal when turning over, and the state latch circuit outputs a state latch signal according to the interrupt signal and is used for controlling the fast protection driving circuit to maintain the driving signal to be at a low level so as to realize state latch. By the latch function of the state latch circuit, the drive signal of the 28V/on output interface circuit is always low before fault elimination and is not changed along with the change of the current detection signal.
The input signals of the fast protection driving circuit in the embodiment of the invention are the output of the comparator circuit and the output of the state latch circuit, and the thyristor can be driven under the control of the two signals, so that the driving signal is pulled down, and the fast cut-off of the 28V/on output interface is realized.
Further, the recoverable fast protection circuit provided by the embodiment of the present invention may further include: a drive circuit;
the driving signal sent by the upper computer is connected to the input end of the driving circuit, and the output end of the driving circuit is connected to the 28V/on output interface circuit;
the driving circuit is used for outputting a driving level to drive the 28V/on output interface circuit under the control of a driving signal. The driving circuit in the embodiment of the invention can be configured with a soft start and slow turn-off module, so that the switching-on speed of the 28V/on output interface can meet the requirement, excessive surge current can be prevented from being generated, and the circuit elements and the protection device can be prevented from being damaged.
The embodiment of the invention provides a recoverable fast protection circuit of a 28V/on output interface circuit, which comprises: the circuit comprises a signal conditioning circuit, a comparator circuit, a fast protection driving circuit and a state latch circuit; according to the restorable quick protection circuit, the sampling signal can be conditioned into a signal which can be collected by the comparator circuit through the signal conditioning circuit, the sampling signal is compared and processed through the comparator circuit, and the output signal is turned over when the short circuit occurs, so that the quick protection driving circuit is controlled to pull down the driving signal for driving, and the state latch circuit is controlled to realize state locking. The turn-off process of the restorable quick protection circuit provided by the embodiment of the invention is completely finished by a hardware circuit, so that the rapidity of turn-off in fault is ensured, and tests prove that the circuit can finish short-circuit protection within 30us after a short-circuit fault occurs. The restorable quick protection circuit provided by the invention has the functions of overcurrent quick protection, state latching, recovery after failure relief and the like, effectively ensures the safety and reliability of a 28V/on output interface circuit of a helicopter electromechanical product, and reduces the system maintenance cost.
The following describes in detail an implementation manner of the recoverable fast protection circuit of the "28V/on" output interface circuit according to an embodiment of the present invention. The recoverable quick protection circuit specifically comprises: the circuit comprises a signal conditioning circuit, a comparator circuit, a fast protection driving circuit and a state latch circuit; the structure and the implementation function of each circuit in the recoverable fast protection circuit are described in detail below.
(1) Signal conditioning circuit
The signal conditioning circuit is realized by adopting resistance sampling and operational amplification, and current acquisition is converted into voltage acquisition through the sampling resistor. The operational amplifier plays a role in amplifying the voltage proportion, determines the amplification factor of the voltage according to the proportional relation of resistors connected with the operational amplifier, and conditions the collected voltage to be within the interface range of the singlechip C8051F 502. The operational amplifier has the characteristics of high input impedance and low output impedance, and can also play the roles of isolation and buffering.
(2) Comparator circuit
The comparator circuit uses a built-in comparator of the singlechip C8051F502 to realize the comparison of the sampling value and the comparison threshold value. The threshold value of the comparator is set according to the limit value of the power switching device and the bearing capacity of the circuit, aiming at the design, according to the characteristics of the actually selected switching device, a point seven times of rated current is selected as a quick turn-off point, when the sampling value exceeds the threshold value, the comparator is turned over, high level is output, and the driving signal of the quick protection driving circuit for pulling down the switching device is controlled.
(3) Fast protection driving circuit
Fig. 3 is a schematic structural diagram of a fast protection driving circuit according to an embodiment of the present invention, where the fast protection driving circuit is composed of a diode and a thyristor, an anode of the thyristor is connected to a driving signal, a cathode of the thyristor is grounded, and a gate of the thyristor is connected to an output terminal of a built-in comparator of the monolithic computer C8051F 502. Meanwhile, the output of the latching signal of the singlechip C8051F502 is also connected to the gate terminal of the thyristor after passing through the diode.
When the power supply works normally, the voltage of a thyristor gate is low level, the thyristor is not conducted, and a power switch of the 28V/on output interface circuit is controlled by a driving signal; when short circuit occurs, the built-in comparator of the single chip microcomputer overturns to output a high signal, the thyristor is controlled to be conducted to pull the power switch driving signal down to the ground, the power switch is turned off, and 28V output is cut off. After the power switch is turned off, the current detection signal is low at the moment, the output of the comparator restores to a low level, but the thyristor is continuously conducted because the output latching signal of the single chip microcomputer is high, the driving signal is continuously low, and the power switch is ensured to be in an off state. Until the fault is eliminated, the single chip microcomputer resets, the latching signal is released, the thyristor is turned off, and the power switch is driven by the driving signal again.
(4) State latch circuit
The state latch circuit is realized based on a comparator interrupt program of the singlechip C8051F502, an interrupt signal is generated when the output level of the comparator circuit is overturned, the I/O port of the singlechip is controlled to output the state latch signal to drive the fast protection driving circuit, and after the 28V output is cut off, the driving signal is maintained to be low, so that the state latch is realized. After the fault is removed, the single chip microcomputer is reset, the I/O output of the single chip microcomputer is recovered to be in a normal state, and the 28V/on output interface circuit is recovered.
Although the embodiments of the present invention have been described above, the above description is only for the convenience of understanding the present invention, and is not intended to limit the present invention. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (8)
1. A recoverable fast protection circuit for a 28V/on output interface circuit, comprising: the circuit comprises a signal conditioning circuit, a comparator circuit, a fast protection driving circuit and a state latch circuit;
the output end of the signal conditioning circuit is connected to the input end of the comparator circuit, the output end of the comparator circuit is respectively connected to the first input end of the fast protection driving circuit and the input end of the state latch circuit, the output end of the state latch circuit is connected to the second input end of the fast protection driving circuit, and the output end of the fast protection driving circuit is coupled to the driving circuit;
the restorable quick protection circuit is used for conditioning the sampling signal into a signal which can be collected by the comparator circuit through the signal conditioning circuit, comparing the sampling signal through the comparator circuit, and realizing the turnover of an output signal during short circuit, thereby controlling the quick protection driving circuit to pull down the driving signal for driving, and controlling the state latch circuit to realize state latch.
2. The recoverable fast protection circuit of a "28V/on" output interface circuit of claim 1, wherein the signal conditioning circuit is implemented using a sampling resistor and an operational amplifier;
the sampling resistor is used for converting the current sampling signal into a voltage sampling signal;
and the operational amplifier is used for conditioning the amplitude of the voltage sampling signal to an amplitude range which can be collected by the comparator circuit through the proportional amplification of the operational amplifier.
3. The recoverable fast protection circuit of a 28V/on output interface circuit of claim 2, wherein the comparator circuit uses a built-in comparator of a single chip microcomputer C8051F 502;
the amplitude of the voltage sampling signal is conditioned to the amplitude range which can be collected by the comparator circuit, and the method specifically comprises the following steps: and the amplitude of the voltage sampling signal is regulated to the interface range of a comparator built in the singlechip C8051F 502.
4. The recoverable fast protection circuit of a 28V/on output interface circuit of claim 3,
the comparator circuit is used for comparing the voltage sampling signal with a preset comparison threshold value, and when the sampling value of the voltage sampling signal exceeds the comparison threshold value, the output level of the comparator circuit is turned from low to high.
5. The recoverable fast protection circuit of a 28V/on output interface circuit of claim 4,
the comparison threshold preset in the comparator circuit is determined according to the limit value of the 28V/on output interface circuit and the bearing capacity of the circuit.
6. The recoverable fast protection circuit of a 28V/on output interface circuit of claim 4,
the fast protection driving circuit is used for pulling down a driving signal of a 28V/on output interface circuit output by the driving circuit and quickly switching off 28V output when the output level of the comparator circuit is reversed.
7. The recoverable fast protection circuit of a 28V/on output interface circuit of claim 4,
the comparator circuit is also used for generating an interrupt signal and transmitting the interrupt signal to the state latch circuit when the output level is overturned;
the state latch circuit is used for outputting a state latch signal according to the interrupt signal so as to control the fast protection driving circuit to maintain the driving signal to be at a low level and realize state latch.
8. The recoverable fast protection circuit of a 28V/on output interface circuit of any of claims 1 to 7, further comprising: a drive circuit;
the driving signal sent by the upper computer is connected to the input end of the driving circuit, and the output end of the driving circuit is connected to the 28V/on output interface circuit;
the driving circuit is used for outputting a driving level to drive the 28V/on output interface circuit under the control of the driving signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011222622.0A CN112491005B (en) | 2020-11-05 | 2020-11-05 | Recoverable quick protection circuit of 28V/on output interface circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011222622.0A CN112491005B (en) | 2020-11-05 | 2020-11-05 | Recoverable quick protection circuit of 28V/on output interface circuit |
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| CN112491005A true CN112491005A (en) | 2021-03-12 |
| CN112491005B CN112491005B (en) | 2023-07-21 |
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Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002171749A (en) * | 2000-11-29 | 2002-06-14 | Ricoh Co Ltd | Switching regulator having overcurrent protective function and electronic apparatus using the same |
| JP2004040858A (en) * | 2002-06-28 | 2004-02-05 | Ricoh Co Ltd | Protection circuit, dc/dc converter, and timer latch circuit |
| CN101187817A (en) * | 2007-11-26 | 2008-05-28 | 天津理工大学 | DSP and CPLD based cascade eleven level dynamic voltage restorer control system |
| US20120106205A1 (en) * | 2010-11-01 | 2012-05-03 | System General Corp. | Power supply with open-loop protection and short-circuit protection |
| CN102593788A (en) * | 2012-03-28 | 2012-07-18 | 桂林航天电子有限公司 | Short circuit/ overcurrent protection controller and operation method |
| US20160087422A1 (en) * | 2014-09-22 | 2016-03-24 | International Rectifier Corporation | Fault and Short-Circuit Protected Output Driver |
| CN106160071A (en) * | 2016-06-29 | 2016-11-23 | 安徽锐能科技有限公司 | Short-circuit protection circuit |
| CN106711954A (en) * | 2017-03-10 | 2017-05-24 | 常熟理工学院 | Fast-response over-current and short-circuit protection circuit |
| JP2017224467A (en) * | 2016-06-15 | 2017-12-21 | 東芝ライテック株式会社 | Protection circuit, light control signal amplifier, power supply device, lighting device, and lighting system |
| CN108233347A (en) * | 2016-12-14 | 2018-06-29 | 中国航空工业集团公司西安航空计算技术研究所 | A kind of brushless motor controller Over Current Protection System and over-current protection method |
| CN111384704A (en) * | 2018-12-27 | 2020-07-07 | 沈阳新松机器人自动化股份有限公司 | Load short circuit self-locking protection circuit |
-
2020
- 2020-11-05 CN CN202011222622.0A patent/CN112491005B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002171749A (en) * | 2000-11-29 | 2002-06-14 | Ricoh Co Ltd | Switching regulator having overcurrent protective function and electronic apparatus using the same |
| JP2004040858A (en) * | 2002-06-28 | 2004-02-05 | Ricoh Co Ltd | Protection circuit, dc/dc converter, and timer latch circuit |
| CN101187817A (en) * | 2007-11-26 | 2008-05-28 | 天津理工大学 | DSP and CPLD based cascade eleven level dynamic voltage restorer control system |
| US20120106205A1 (en) * | 2010-11-01 | 2012-05-03 | System General Corp. | Power supply with open-loop protection and short-circuit protection |
| CN102593788A (en) * | 2012-03-28 | 2012-07-18 | 桂林航天电子有限公司 | Short circuit/ overcurrent protection controller and operation method |
| US20160087422A1 (en) * | 2014-09-22 | 2016-03-24 | International Rectifier Corporation | Fault and Short-Circuit Protected Output Driver |
| JP2017224467A (en) * | 2016-06-15 | 2017-12-21 | 東芝ライテック株式会社 | Protection circuit, light control signal amplifier, power supply device, lighting device, and lighting system |
| CN106160071A (en) * | 2016-06-29 | 2016-11-23 | 安徽锐能科技有限公司 | Short-circuit protection circuit |
| CN108233347A (en) * | 2016-12-14 | 2018-06-29 | 中国航空工业集团公司西安航空计算技术研究所 | A kind of brushless motor controller Over Current Protection System and over-current protection method |
| CN106711954A (en) * | 2017-03-10 | 2017-05-24 | 常熟理工学院 | Fast-response over-current and short-circuit protection circuit |
| CN111384704A (en) * | 2018-12-27 | 2020-07-07 | 沈阳新松机器人自动化股份有限公司 | Load short circuit self-locking protection circuit |
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| CN112491005B (en) | 2023-07-21 |
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